CN103684519B - A kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna - Google Patents
A kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna Download PDFInfo
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- CN103684519B CN103684519B CN201310656758.6A CN201310656758A CN103684519B CN 103684519 B CN103684519 B CN 103684519B CN 201310656758 A CN201310656758 A CN 201310656758A CN 103684519 B CN103684519 B CN 103684519B
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Abstract
The invention discloses a kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna, relate to wireless communication technology field.It includes outdoor transducer, single channel swivel joint, power splitter and the indoor transducer being sequentially connected with by signal transmission direction, outdoor transducer is connected with the tuner of satellite antenna and the two paths of signals that tuner exports is carried out Frequency mixing processing, then mixed signal is delivered to single channel swivel joint and by power splitter, mixed signal is divided into multichannel, eventually through indoor transducer, the two paths of signals in mixed signal is controlled in identical frequency band scope, the frequency input needs of receiver are met, it is achieved the normal switching of two paths of signals and the reception of whole TV programme with this.This device uses relatively low cost, efficiently solves and there is Signal share collision problem when multiple stage receiver shares an antenna, and cable utilization rate is high, compatible strong, has the strongest suitability and significant realistic meaning.
Description
Technical field
The present invention relates to wireless communication technology field, be specifically related to a kind of low cost, cable utilization rate is high, holds concurrently
Capacitive is strong, can effectively solve to exist when multiple stage receiver shares an antenna satellite of Signal share collision problem
Intermediate-freuqncy signal conversion equipment.
Background technology
In satellite TV signal transmitting procedure, for improving channel bandwidth utilization ratio, often signal is divided into pole
Changing contrary two ways to propagate, as linear polarization is divided into horizontal polarization and vertical polarization, circular polarisation is divided into
Left-handed polarization and right-hand polarization.For fixing user, often a surface antenna only connects a receiver,
Receiver can select to receive the satellite-signal of different polarization mode by the way of 13V/18V voltage switching.
But for the mobile vehicle user such as automobile, boats and ships, owing to mobile satellite antenna is expensive, need multiple stage to connect
Receipts machine shares the signal of a surface antenna.And mobile satellite antenna is in order to adapt to carrier movement, need to carry out in real time
360 ° adjust orientation angles, and one-way satellite intermediate-freuqncy signal typically can only be transmitted in the place of being rotatably connected, when multiple stage connects
Can there is sharing conflict when receipts machine shares a mobile satellite antenna, multiple stage receiver can only receive same simultaneously
Plant the satellite-signal of polarization mode, thus whole TV programme of direct broadcasting satellite cannot be normally received.
Being present in that current this problem is universal is vehicle-mounted, among boat-carrying satellite tv antenna system, deposit the most simultaneously
It is vehicle-mounted, boat-carrying two-way communication antenna, this antenna satellite-signal to be received, the most also to send out
Penetrating satellite-signal, conventional Single-channel Rolling joint cannot meet use demand, can only use double-channel rotatable
Joint, but Two channels rotating joint is the most expensive, and also service life is the highest, and this always limits car
One of major technology bottleneck of load, boat-carrying two-way communication antenna development.
Summary of the invention
In order to solve the defect that above-mentioned technology exists, the present invention provides a kind of low cost, and cable utilization rate is high,
Compatible strong, can effectively solve to there is defending of Signal share collision problem when multiple stage receiver shares an antenna
Star intermediate-freuqncy signal conversion equipment.
The present invention realizes above-mentioned technique effect and be the technical scheme is that
A kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna, transmits including by signal
Outdoor transducer, single channel swivel joint, power splitter and the indoor transducer that direction is sequentially connected with, wherein, institute
State the outdoor input of transducer to be connected with the tuner outfan of satellite antenna, described indoor transducer defeated
Go out end to be connected with the input of receiver.
Above-mentioned a kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna, described outdoor
Transducer includes that a signal closes road and voltage follower circuit, described signal close road be provided with the first signal input part and
Secondary signal input, is provided with the first letter between described first signal input part and the outfan of described tuner
Number circuit, is provided with secondary signal circuit between described secondary signal input and the outfan of described tuner.
Above-mentioned a kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna, described voltage
Output circuit is provided with the first voltage follower circuit and the second voltage follower circuit, described first voltage follower circuit
All 18V inputs with described outdoor transducer are connected with described second voltage follower circuit, and described first is electric
Voltage follower circuit provides 18V supply voltage for described tuner, and described second voltage follower circuit is described height
Frequently head provides 13V supply voltage.
Above-mentioned a kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna, described first
Being equipped with capacitance in signal circuit and described secondary signal circuit, described second voltage follower circuit includes
One dc-dc, for being converted to 13V output voltage by the 18V input voltage of described outdoor transducer.
Above-mentioned a kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna, described first
Signal circuit is provided with between capacitance and described first signal input part the first frequency mixer, described first
Frequency mixer connects the first signal source.
Above-mentioned a kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna, described indoor
Transducer includes signal branch and an output select circuit, the outfan of described signal branch and described output choosing
Select and between the input of circuit, be respectively equipped with the first shunt circuit and the second shunt circuit.
Above-mentioned a kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna, described first
Being in series with the second frequency mixer in shunt circuit, described second frequency mixer connects secondary signal source.
Above-mentioned a kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna, described signal
Capacitance and the signal amplifier of series connection it is provided with between input and the outfan of described power splitter of branch,
The outfan of described capacitance is connected with the input of described signal amplifier.
The invention have the benefit that this device will originally be defended more than the two-way or two-way of same frequency band
Star intermediate-freuqncy signal carries out frequency conversion, frequency dispersion is transmitted at different frequency bands, and signal is by single
After channel rotary joint, then it is transformed into original frequency band respectively, for different equipment, thus can be real
The most same cable transmits multiple-link satellite signal simultaneously, it is achieved the normal switching of two paths of signals and whole electricity
Reception depending on program.Having equipment cost low, cable utilization rate is high, compatible strong feature, effectively solves
The problem that there is Signal share conflict when multiple stage receiver shares an antenna, has the strongest suitability and aobvious
The realistic meaning write.
Accompanying drawing explanation
Fig. 1 is that the module of the present invention connects block diagram；
Fig. 2 is the internal structure circuit diagram of outdoor transducer of the present invention；
Fig. 3 is the internal structure circuit diagram of indoor transducer of the present invention；
In figure: 1-satellite antenna, 2-tuner, 3-outdoor transducer, 4-single channel swivel joint, 5-power splitter,
6-indoor transducer, 7-receiver, 31-signal close road, 32-the first signal source, 33-DC-DC transducer,
34-the first frequency mixer, 61-signal branch, 62-output select circuit, 63-secondary signal source, 64-second
Frequency mixer, 65-signal amplifier.
Detailed description of the invention
For making the present invention is further understood, referring to Figure of description and specific embodiment to this
Bright it is described further:
As shown in Figure 1 to Figure 3, a kind of satellite intermediate frequency signal conversion dress being applied to boat-carrying satellite tv antenna
Putting, it includes that the outdoor transducer 3 being sequentially connected with by signal transmission direction, single channel swivel joint 4, merit are divided
Device 5 and indoor transducer 6, wherein, the input of outdoor transducer 3 and the tuner 2 of satellite antenna 1
Outfan connects, and this tuner 2 is dual polarization dual output tuner, the outfan of indoor transducer 6 with connect
The input of receipts machine 7 connects.
During enforcement, as a preferred embodiment of the present invention, the dual polarization dual output high frequency of satellite antenna 1
The 2 circular polarisation tuners using reference frequency outputs to be 950～1450MHz, a road output signal is left-handed
Signal, another road output signal is right hand signal, it is noted that the polarization mode choosing of this tuner 2
Select and be intended only as a preferred embodiment of the present invention, be not used to limit to the present invention, vertical polarization and level
The signal output of polarization is same within protection scope of the present invention.Specifically, in the preferred embodiment,
The output signal of this tuner 2 is by output voltage control, and 18V exports left-handed signal, 13V output dextrorotation letter
Number, the running voltage of outdoor transducer 3 is 18V, powers to self and tuner 2, and it includes a signal
Closing road 31 and voltage follower circuit, this signal closes road 31 and is provided with the first signal input part and secondary signal input
End, is provided with the first signal circuit, this first signal between the outfan of the first signal input part and tuner 2
Circuit is for receiving the left-handed signal of an outfan output of tuner 2；Secondary signal input and tuner
Being provided with secondary signal circuit between another outfan of 2, this secondary signal circuit is for receiving tuner 2
The right hand signal of another outfan output.Voltage follower circuit is provided with the first voltage follower circuit and the second voltage
Output circuit, the first voltage follower circuit and the second voltage follower circuit are all defeated with the 18V of outdoor transducer 3
Entering end to connect, the first voltage follower circuit provides 18V supply voltage, the second voltage output electricity for tuner 2
Road includes a dc-dc 33, and this dc-dc 33 is for by defeated for the 18V of outdoor transducer 3
Enter voltage and be converted into 13V output voltage, make the second voltage follower circuit provide 13V to power electricity for tuner 2
Pressure.
Specifically, in this embodiment, the first signal circuit and secondary signal circuit are equipped with capacitance,
First signal circuit is for receiving the left side that frequency range is 950～1450MHz of tuner 2 one outfan output
Rotation signal, secondary signal circuit for receiving the frequency range of another outfan of tuner 2 output is
The right hand signal of 950～1450MHz.In the first signal circuit, capacitance closes the first of road 31 with signal
Being provided with the first frequency mixer 34 between signal input part, the first frequency mixer 34 connects the first signal source 32, should
The output frequency of the first signal source 32 is 3100MHz, and frequency is 950～1450MHz by the first frequency mixer 34
Original left-handed signal and the first signal source 32 output the signal that frequency is 3100MHz carry out Frequency mixing processing,
Obtain the left-handed signal that frequency range is 1650～2150MHz scopes, the right hand signal of tuner output without
Cross any process, close in road 31 through the direct arriving signal of secondary signal circuit, and with process after left-handed
Signal mixes, and obtains the mixed signal that frequency range is 950～2150MHz, both wrapped in this mixed signal
Containing left-handed signal, comprise again right hand signal.This mixed signal passes through single channel swivel joint 4 again to indoor transmissions
Signal, is divided into multichannel by power splitter 5 by this mixed signal again in indoor, is respectively transmitted to different rooms.
In a preferred embodiment of the invention, power splitter 5 is that two merits are divided, it is of course also possible to be three merits divide, four merits
Divide, six merits grade different power splitters.
Before signal is transferred to receiver 7, needs to first pass through indoor transducer 6 and carry out signal behavior recovery.
Specifically, in this embodiment, indoor transducer 6 includes a signal branch 61 and output select circuit 62.
Signal branch 61 is provided with two outfans, and output select circuit 62 is provided with 18V and selects input and 13V choosing
Selecting input, 61 liang of outfans of signal branch select input, 13V with the 18V of output select circuit 62
Selection input connects one to one.One outfan of signal branch 61 and the 18V of output select circuit 62
Selecting to constitute the first shunt circuit between input, another outfan of signal branch 61 selects electricity with output
The 13V on road 62 selects input to constitute the second shunt circuit.Wherein, the first shunt circuit is in series with
Two frequency mixers 64, the second frequency mixer 64 connects secondary signal source 63, the letter of secondary signal source 63 output
Number frequency is 3100MHz.It is provided with series connection between input and the outfan of power splitter 5 of signal branch 61
Capacitance and signal amplifier 65, the outfan of capacitance connects with the input of this signal amplifier 65
Connect.After mixed signal enters indoor transducer 6, first pass through capacitance cut off direct current, the most again through letter
Number amplifier 65 carries out signal amplification and is divided into two paths of signals, a road signal and secondary signal source 63 output
Frequency is that to obtain frequency under the Frequency mixing processing of the second frequency mixer 64 be 950～1450MHz to the signal of 3100MHz
Left-handed signal, be then transmit to output select circuit 62 18V select input, another road signal is not
Doing any process, the 13V being directly transferred to output select circuit 62 selects input.Through indoor conversion
The signal behavior of device 6 recovers, and the frequency of the left-handed signal in the first shunt circuit is extensive from 1650～2150MHz
Multiple to 950～1450MHz, the frequency range of right hand signal has changed to 950～1450MHz.When output selects
When circuit 62 carries out signal behavior according to the 13V/18V voltage of receiver 7, no matter have selected left-handed signal
Or right hand signal, useful signal appears between 950～1450MHz, just meets receiver 7
Frequency input needs, and is the most just capable of the normal switching of left-right rotary, it is achieved the whole TV programme of left-right rotary
Reception.
More than it is intended only as a preferred embodiment of the present invention, the first signal source 32 and secondary signal source 63
Frequency be not limited to 3100MHz, according to actually used demand, the signal source that can use different frequency will
Two-way or the identical intermediate-freuqncy signal of channelized frequencies scope, be transformed into different frequency bands and be transmitted, then warp
Normally use after over recovery conversion, the multichannel intermediate-freuqncy signal multiplexing of single coaxial cable can be realized.
Original two-way or two-way above satellite intermediate frequency signal at same frequency band is carried out frequency by this device
Conversion, is transmitted frequency dispersion at different frequency bands, after signal passes through Single-channel Rolling joint, then
It is transformed into original frequency band respectively, for different equipment, thus may be implemented in same cable same
Time transmission multiple-link satellite signal, eliminate prior art to Two channels rotating joint and multipassage rotary joint
Dependency, it is achieved that the normal switching of two paths of signals and the reception of whole TV programme.There is equipment cost low,
Cable utilization rate is high, compatible strong feature, efficiently solves when multiple stage receiver shares an antenna and exists
The problem of Signal share conflict, has the strongest suitability and significant realistic meaning.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The industry
Skilled person will appreciate that, the present invention is not restricted to the described embodiments, in above-described embodiment and description
The principle of the simply present invention described, the present invention also has without departing from the spirit and scope of the present invention
Various changes and modifications, these changes and improvements both fall within the range of claimed invention, the present invention
The protection domain required is defined by appending claims and equivalent thereof.
Claims (3)
1. the satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna, it is characterised in that
Including the outdoor transducer being sequentially connected with by signal transmission direction, single channel swivel joint, power splitter and indoor turn
Parallel operation, wherein, the described outdoor input of transducer is connected with the tuner outfan of satellite antenna, described
The indoor outfan of transducer is connected with the input of receiver, and described outdoor transducer includes that a signal closes road
And voltage follower circuit, described signal closes road and is provided with the first signal input part and secondary signal input, described
The first signal circuit, described secondary signal it is provided with between the outfan of the first signal input part and described tuner
Being provided with secondary signal circuit between the outfan of input and described tuner, described voltage follower circuit is provided with
First voltage follower circuit and the second voltage follower circuit, described first voltage follower circuit and described second electricity
Voltage follower circuit all 18V inputs with described outdoor transducer are connected, and described first voltage follower circuit is
Described tuner provides 18V supply voltage, and described second voltage follower circuit provides 13V for described tuner
Supply voltage, described first signal circuit and described secondary signal circuit be equipped with capacitance, described
Two voltage follower circuits include a dc-dc, for the 18V input voltage by described outdoor transducer
Be converted to 13V output voltage, at capacitance and described first signal input part in described first signal circuit
Between be provided with the first frequency mixer, described first frequency mixer connects the first signal source, described indoor transducer bag
Include signal branch and an output select circuit, the outfan of described signal branch and described output select circuit
The first shunt circuit and the second shunt circuit it is respectively equipped with between input.
A kind of satellite intermediate frequency signal being applied to boat-carrying satellite tv antenna the most according to claim 1
Conversion equipment, it is characterised in that being in series with the second frequency mixer in described first shunt circuit, described second mixes
Frequently device connects secondary signal source.
A kind of satellite intermediate frequency signal being applied to boat-carrying satellite tv antenna the most according to claim 1
Conversion equipment, it is characterised in that set between input and the outfan of described power splitter of described signal branch
There are capacitance and the signal amplifier of series connection, the outfan of described capacitance and described signal amplifier
Input connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656758.6A CN103684519B (en) | 2013-12-06 | 2013-12-06 | A kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310656758.6A CN103684519B (en) | 2013-12-06 | 2013-12-06 | A kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna |
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| Publication Number | Publication Date |
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| CN103684519A CN103684519A (en) | 2014-03-26 |
| CN103684519B true CN103684519B (en) | 2016-08-10 |
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| CN201310656758.6A Active CN103684519B (en) | 2013-12-06 | 2013-12-06 | A kind of satellite intermediate frequency chromacoder being applied to boat-carrying satellite tv antenna |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107431922B (en) * | 2015-04-03 | 2020-04-14 | 华为技术有限公司 | Conflict solution method for set top box output signals and set top box |
| CN107369922B (en) * | 2016-05-12 | 2023-04-07 | 上海汽车集团股份有限公司 | BD/GPS dual output antenna device |
| CN107820028A (en) * | 2017-11-16 | 2018-03-20 | 珠海市普斯赛特科技有限公司 | A kind of multi-channel switch with function of power protection |
| CN113613086B (en) * | 2021-08-20 | 2024-01-02 | 四川九州电子科技股份有限公司 | Method for sharing one satellite antenna by multiple satellite set top boxes |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010226755A (en) * | 2010-05-24 | 2010-10-07 | Hochiki Corp | Block converter |
| CN103311667A (en) * | 2013-05-23 | 2013-09-18 | 嘉兴星网通信技术有限公司 | Novel vehicle and vessel satellite television antenna for single coaxial cable to transmit double-polarization signals simultaneously |
| CN203661056U (en) * | 2013-12-06 | 2014-06-18 | 浙江中星光电子科技有限公司 | Satellite intermediate frequency signal conversion apparatus applied to shipborne satellite television antenna |
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2013
- 2013-12-06 CN CN201310656758.6A patent/CN103684519B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010226755A (en) * | 2010-05-24 | 2010-10-07 | Hochiki Corp | Block converter |
| CN103311667A (en) * | 2013-05-23 | 2013-09-18 | 嘉兴星网通信技术有限公司 | Novel vehicle and vessel satellite television antenna for single coaxial cable to transmit double-polarization signals simultaneously |
| CN203661056U (en) * | 2013-12-06 | 2014-06-18 | 浙江中星光电子科技有限公司 | Satellite intermediate frequency signal conversion apparatus applied to shipborne satellite television antenna |
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| CN103684519A (en) | 2014-03-26 |
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Address after: 315500 No.499, East Yuelin Road, Yuelin street, Fenghua District, Ningbo City, Zhejiang Province Patentee after: ZHEJIANG CHINASTAR ELECTRONIC SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 317500, Chaoyang Road, 3 industrial district, Wenling, Zhejiang, Taizhou Patentee before: ZHEJIANG CHINASTAR ELECTRONIC SCIENCE & TECHNOLOGY Co.,Ltd. |